Interlayer adhesion in roll-to-roll processed flexible inverted polymer solar cells

Stephanie R. Dupont, Mark Oliver, Frederik C Krebs, Reinhold H. Dauskardt

    Research output: Contribution to journalConference articleResearchpeer-review


    The interlayer adhesion of roll-to-roll processed flexible inverted P3HT:PCBM bulk heterojunction (BHJ) polymer solar cells is reported. Poor adhesion between adjacent layers may result in loss of device performance from delamination driven by the thermomechanical stresses in the device. We demonstrate how a thin-film adhesion technique can be applied to flexible organic solar cells to obtain quantitative adhesion values. For the P3HT:PCBM-based BHJ polymer solar cells, the interface of the BHJ with the conductive polymer layer PEDOT:PSS was found to be the weakest. The adhesion fracture energy varied from 1.6 J/m2 to 0.1 J/m2 depending on the composition of the P3HT:PCBM layer. Post-deposition annealing time and temperature were shown to increase the adhesion at this interface. Additionally the PEDOT:PSS cells are compared with V2O5 cells whereby adhesive failure marked by high fracture energies was observed.
    Original languageEnglish
    JournalSolar Energy Materials & Solar Cells
    Pages (from-to)171-175
    Publication statusPublished - 2012
    EventGlobal Organic PhotoVoltaic Conference 2011 - Zhejiang University, Hangzhou, China
    Duration: 10 Oct 201112 Oct 2011


    ConferenceGlobal Organic PhotoVoltaic Conference 2011
    LocationZhejiang University


    • Polymer solar cells


    Polymer Solar Cells for Solar Energy Conversion

    Krebs, F. C.


    Project: Research

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